Home / 130,547.50-180,156.63-70,931.50

Finding the Fourth Proportional to 130,547.50, 180,156.63 and 70,931.50

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Solution

The fourth proportional to 130,547.50, 180,156.63 and 70,931.50 is: 97,886.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,547.50 : 180,156.63 = 70,931.50 : x
  2. Step 2: Convert to fraction form
    130,547.50/180,156.63 = 70,931.50/x
  3. Step 3: Cross multiply
    130,547.50x = 180,156.63 × 70,931.50
  4. Step 4: Simplify right side
    130,547.50x = 12,778,780,000.85
  5. Step 5: Solve for x
    x = 12,778,780,000.85/130,547.50
  6. Step 6: Final answer
    x = 97,886.06

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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.