Home / 130,459,631.31-180,029,702.12-71,721,870.51

Finding the Fourth Proportional to 130,459,631.31, 180,029,702.12 and 71,721,870.51

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Solution

The fourth proportional to 130,459,631.31, 180,029,702.12 and 71,721,870.51 is: 98,973,658.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,459,631.31 : 180,029,702.12 = 71,721,870.51 : x
  2. Step 2: Convert to fraction form
    130,459,631.31/180,029,702.12 = 71,721,870.51/x
  3. Step 3: Cross multiply
    130,459,631.31x = 180,029,702.12 × 71,721,870.51
  4. Step 4: Simplify right side
    130,459,631.31x = 12,912,066,983,045,904
  5. Step 5: Solve for x
    x = 12,912,066,983,045,904/130,459,631.31
  6. Step 6: Final answer
    x = 98,973,658.39

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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.