Home / 261,859,931.24-392,775,643.02-80,107,108.52

Finding the Fourth Proportional to 261,859,931.24, 392,775,643.02 and 80,107,108.52

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Solution

The fourth proportional to 261,859,931.24, 392,775,643.02 and 80,107,108.52 is: 120,156,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,859,931.24 : 392,775,643.02 = 80,107,108.52 : x
  2. Step 2: Convert to fraction form
    261,859,931.24/392,775,643.02 = 80,107,108.52/x
  3. Step 3: Cross multiply
    261,859,931.24x = 392,775,643.02 × 80,107,108.52
  4. Step 4: Simplify right side
    261,859,931.24x = 31,464,121,059,415,916
  5. Step 5: Solve for x
    x = 31,464,121,059,415,916/261,859,931.24
  6. Step 6: Final answer
    x = 120,156,302.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.