Home / 130,486.77-180,060.75-72,345.06

Finding the Fourth Proportional to 130,486.77, 180,060.75 and 72,345.06

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Solution

The fourth proportional to 130,486.77, 180,060.75 and 72,345.06 is: 99,830.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,486.77 : 180,060.75 = 72,345.06 : x
  2. Step 2: Convert to fraction form
    130,486.77/180,060.75 = 72,345.06/x
  3. Step 3: Cross multiply
    130,486.77x = 180,060.75 × 72,345.06
  4. Step 4: Simplify right side
    130,486.77x = 13,026,505,762.40
  5. Step 5: Solve for x
    x = 13,026,505,762.40/130,486.77
  6. Step 6: Final answer
    x = 99,830.09

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1.5x scale

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.