Home / 130,896,931.38-180,638,312.31-72,158,307.72

Finding the Fourth Proportional to 130,896,931.38, 180,638,312.31 and 72,158,307.72

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Solution

The fourth proportional to 130,896,931.38, 180,638,312.31 and 72,158,307.72 is: 99,578,766.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,896,931.38 : 180,638,312.31 = 72,158,307.72 : x
  2. Step 2: Convert to fraction form
    130,896,931.38/180,638,312.31 = 72,158,307.72/x
  3. Step 3: Cross multiply
    130,896,931.38x = 180,638,312.31 × 72,158,307.72
  4. Step 4: Simplify right side
    130,896,931.38x = 13,034,554,925,686,444
  5. Step 5: Solve for x
    x = 13,034,554,925,686,444/130,896,931.38
  6. Step 6: Final answer
    x = 99,578,766.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.