Home / 145,407,315.20-217,925,731.20-77,282,643.20

Finding the Fourth Proportional to 145,407,315.20, 217,925,731.20 and 77,282,643.20

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Solution

The fourth proportional to 145,407,315.20, 217,925,731.20 and 77,282,643.20 is: 115,825,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,407,315.20 : 217,925,731.20 = 77,282,643.20 : x
  2. Step 2: Convert to fraction form
    145,407,315.20/217,925,731.20 = 77,282,643.20/x
  3. Step 3: Cross multiply
    145,407,315.20x = 217,925,731.20 × 77,282,643.20
  4. Step 4: Simplify right side
    145,407,315.20x = 16,841,876,528,428,708
  5. Step 5: Solve for x
    x = 16,841,876,528,428,708/145,407,315.20
  6. Step 6: Final answer
    x = 115,825,510.60

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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.