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Finding the Fourth Proportional to 186,420.48, 257,260.80 and 110,968.32

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Solution

The fourth proportional to 186,420.48, 257,260.80 and 110,968.32 is: 153,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,420.48 : 257,260.80 = 110,968.32 : x
  2. Step 2: Convert to fraction form
    186,420.48/257,260.80 = 110,968.32/x
  3. Step 3: Cross multiply
    186,420.48x = 257,260.80 × 110,968.32
  4. Step 4: Simplify right side
    186,420.48x = 28,547,798,777.86
  5. Step 5: Solve for x
    x = 28,547,798,777.86/186,420.48
  6. Step 6: Final answer
    x = 153,136.60

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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.